Cause
resume requires a paused campaign, or one blocked for a cause that the integration can resume.
What to do
Check the state of the campaign.
application/problem+json
{
"type": "https://masnet.com/developers/errors/campaign_not_paused",
"title": "Campaign is not paused",
"status": 409,
"detail": "...",
"code": "campaign_not_paused",
"correlation_id": "..."
}